Device for locking nuts and the like



0, NETTLEFOLD.

DEVICE FOR LOOKING NUTS AND THE LIKE.

APPLICATION EILED JAN- 12. 1921.

1,415,681 Patented May 9, 1922.

UNHED STATES OS WAL'D NETTLEFOLD, OF LONDON, ENGLAlN D.

DEVICE FOR LOCKING?- NU'I'S AND THE LIKE. i

Application filedvJ'anuary 12, 1921.

To all whom it may concern:

Be it known that I, OSWALD NETTLEFOLD,

'which the following is aspecification.

This inv'ention relates to devices for locking nuts and the like of the kind which con sists of a metal band embracing the bolt or stud to which the nut or the like is applied and in the lock-fast position ing and cross-threading the thread of the bolt immediately beyond or outside the nut. In a prior application of the present applicant the locking device is secured by anchoring it to the nut, one or both ends of the band or wire being bent over to project beyond the face of the nut with this object.

In the improved device which constitutes the present invention an eifectivelock is obtained without so bending over one or both ends of the wire to anchor the device to the nut, viz making. the locking band or wire with one end turned upwards or outwards,

1. e. away from the outer face of the nut,

and leaving the other end to project beyond the upturned end, so that it can be sprung over the latter to place the band in tension and cross-threading the thread of the bolt or stud. When the tension is taken off by releasing the two ends of the wire, the nut and its locking device can be readily unscrewed.

In the accompanying drawings illustrating the invention Figs. 1 and 2 are plan views of a bolt and nut showing thelo'cking device in the lock-fast and the released posit-ions respectively; and Figs. 3 and e are front and rear elevations of same showing the locking device in the lockfast position.

The locking band is therein shownas a loop a of wire, usually of spring steel, bent approximately to the diameter of the bolt Specification of Letters Patent.

closely engag- I Serial No. 436,756. to which it is designed to be applied and having one end a while the 0th islocked securely against accidental unscrewing. j the r means. than those described for looking the two ends of the band together-canbe adopted without departing from the inve'n-' 'lIlOIl, so long as the said invention and the best means Iknow of carrying the same into" practical effect, I

cla1m: v v l. A device for locking nuts or the like,

Patented May 9, 1922.

turned outwardly or upwardly at right angles to the face of the nut,

nut but cross-thread I I consisting'of a metal band adapted to seat itself in th e grooves of the screw thread of the bolt or stud to which is applied and having its ends shaped to iu- I v lock-fast PI)". v sition with the band closely engaging and terlock with each other in the cross-threading the thread of the bolt.

2. A' device for locking nuts or the like, consisting of a spring to engage the thread of the bolt or stud to which the nut or the like is applied and having one end turned outwards from the face of the nut to be hand of metal formed locked and the otherend pro ecting beyond the upturned end I over which it is sprung to interlock therecause the band to cross-thread the a With and thread of the bolt, substantially as described. In testimony whereof I have signed my name to this specification.

OSVVALD NETTLEFOLD. 

